Apparatus for molding pipe or conduits



Nov. 8, 1932. c. JACKSON APPARATUS FOR MOLDING PIPE OR CONDUITS Filed July 5, 1928 lllv INVENTOR Cor Wz'ZZ k/d C/(OOfz B Y 4 A TTOEA IE IZ Patented Nov. 8, 1932 PATENT; OFFICE COBWILL JACKSON, OF CHICAGO, ILLINOIS APPARATUS FOR MOLDING PIPE OR GONDUITS Application filed July 5, 1928. Serial No. 290,356.

The main object of this invention is to (provide an improved apparatus for the mol mg of concrete pipe by means of which concrete pipe of a superior quality may be uniformly and rapidly produced.

A further object is to provide a method of producing concrete pipe or conduits which 1s well adapted for the forming of pipe of large diameters and renders possible the rapid production of pipe of substantial uniform density.

Objects relating to details and economies of my invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, forming a part of this ap lication, in which:

ig. 1 is a horizontal section on line 11 of Fig. 2 of a pipe molding apparatus embodyin the features of my invention.

ig. 2 is a side elevation partially in section on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary view of a modified form or embodiment of my invention.

In the drawing similar reference characters refer to similar parts throughout the several views.

Referrin to the drawing, 1 represents the outer pipe orm and 2 the inner form. These are conventionally shown in the drawing as being continuous although in practice it will be understood that they are usually made in sections or collapsible so that they may be removed from the completed pipe.

3 represents the concrete material.

The form is set up in the usual manner and filled with the concrete mixture. While in a plastic condition, a rapid vibration is set up in the forms and material by means of a vibrating unit which, in the embodiment illustrated, consists of an electric motor casing 4- havin diverging arms 5 adapted to engage the si e of the form as shown in Figs. 1 and 2.

The rotor element 6 of the motor is provided with a shaft 7 supported in bearings 8 in the casing or housing 4. The stator of the motor, designated generally by the numeral 9, is mounted within the casing.

The shaft 7 is provided with an unbalancing weight 10 so that as the shaft is rotated, the motor housing is rapidly vibrated.

The arms 5 are clamped against the side of. the casing by means of the chain or cable 11 which is provided with a turnbuckle 12 by means of which the housing is clamped to the form so that the vibrations are imparted to the form substantially throughout and through it to the material within the form.

This is found in practice to result in a very uniform and effective settling or compacting of the material within the form and where reinforce members are provided, the material is effectively imbedded and positioned around such reinforce members. The reinforce materials are not illustrated in the accompanying drawing as their use is well understood in this art.

In the modification shown in Fig. 3, the motor housing 13 is provided with face members 14 at one end which are bolted to the inside of the inner form 2. The apparatus shown in Figs. 1 and 2 is, however, preferred in view of the convenience in using the same, and further, that the vibrations are very uniformly distributed throughout the mold.

By my improved method, pipes or conduits of large size may be rapidly and uniformly produced. If desired, relatively dry mixtures can be effectively compacted or settled into the forms by this method.

I have illustrated and described my improvements in an embodiment which I have found very satisfactory. I have not attempted to illustrate and describe other embodiments or adaptations as it is believed that this disclosure will enable those skilled inthe art to embody or adapt my improvements as may be desired. i i

Having thus described my invention, what 1 claim as new and desire to secure by Letters Patent, is: I i

l. The combination of a motor casing provided with armsadapted to rest upon a form, at substantially spaced points a motor Within said casing comprisin a rotor shaft provided with an unbalancing weight, and a form embracing cableconnected to said arms and adjustable to clamp a casing upon the form. I

2. An apparatus of the class described comprising a motor casing having diverging arms adapted to rest upon a form, a form .clamping cable secured to said arms, and a rotor within said casing having a shaft provided with an unbalancing weight, the shaft being disposed transversely of the arms.

3. A device of the character described comprising a supporting structure adapted to be placed in abutment with a form, a vibrator fixed on said structure, a band ada ted to extend around a form, and means or connecting said band to said structure at points spaced a substantial distance away from the form to which the device is attached.

4. In a molding apparatus, thecombination of an electric motor comprising a casing having diverging arms adapted to rest upon a form, a rotor having a shaft with an unbalancing weight thereon, and a form embracing cable connected to said arms, said cable being provided with a turnbuckle whereby said casing may be clamped upon the form.

5. In a molding apparatus, the combination of an electric motor comprising a casing, a rotor having a shaft with an unbalancing weight thereon, and a form embracing cable connected to said casing, said cable being provided with an adjusting means whereby said casing may be clamped upon the form..

6. In an apparatus of the class described, the combination of a vibrating unit provided with a support through which its vibrations are transmitted, and 'a cable constructed to be passed around a form attached to said support for clamping said support to a form to e supported thereby.

7. In an apparatus of the class described, the combination of a vibrating unit comprising a casing having spaced'form engaging members, and a cable attached to said casing and constructed to be passed around a form for clamping said casing thereto, said casing having a rotor therein provided with an unbalancing weight disposed to impart vibrations to the form in planes substantially at right angles to the plane of said cable.

8. In a molding apparatus, the combination of a vibrating unit comprising a support constructed to engage a form, a clamping element attached to said vibrating unit support and constructed to be passed around the form for clamping said vibrating unit to the form so that the form constitutes the support therefor, said vibrating unit having means for imparting vibrations to the form through said support and clamping element in planes substantially at right angles to the plane of said form embracing element.

9.'In a molding apparatus, the combination of a vibrating unit provided with a form engaging support, and means for securing said support to a form so that the form constitutes a support for said vibrating unit and including a form embracing element through which the Vibrations of said unit are trans: mitted entirely around the form, said vibrating unit having means for imparting vibrations thereto in planes approximately parallel to the walls of the form.

10. In an apparatus of the class described, the combination of a motor casing constructed to rest upon the side of a pipe form or the like, a form embracing element secured to said casing for clamping it to the side of a form, and a rotor within said casing provided with a shaft disposed parallel to the longitudinal axis of the form and provided with an unbalancing weight.

In witness whereof I have hereunto set my hand.

CORWILL JACKSON. 

